[ 19.275253][ T3694] 8021q: adding VLAN 0 to HW filter on device bond0 [ 19.279967][ T3694] eql: remember to turn off Van-Jacobson compression on your slave devices [ 19.321849][ T9] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 19.325185][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. 1970/01/01 00:00:40 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:40 parsed 1 programs syzkaller login: [ 43.080293][ T4029] cgroup: Unknown subsys name 'net' [ 43.298631][ T4029] cgroup: Unknown subsys name 'rlimit' [ 43.691186][ T4029] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 53.588116][ T4052] chnl_net:caif_netlink_parms(): no params data found [ 53.629652][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.631571][ T4052] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.634641][ T4052] device bridge_slave_0 entered promiscuous mode [ 53.641751][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.643601][ T4052] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.645865][ T4052] device bridge_slave_1 entered promiscuous mode [ 53.660865][ T4052] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.665173][ T4052] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.680344][ T4052] team0: Port device team_slave_0 added [ 53.684044][ T4052] team0: Port device team_slave_1 added [ 53.699200][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.700870][ T4052] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 53.707596][ T4052] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.711704][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.713579][ T4052] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 53.719810][ T4052] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.805831][ T4052] device hsr_slave_0 entered promiscuous mode [ 53.842982][ T4052] device hsr_slave_1 entered promiscuous mode [ 53.961915][ T4052] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.015765][ T4052] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.057240][ T4052] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.095041][ T4052] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.152340][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.154389][ T4052] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.156619][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.158479][ T4052] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.261505][ T4052] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.270699][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.275239][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.277943][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.280750][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.289338][ T4052] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.295089][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.297485][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.299254][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.307076][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.309615][ T153] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.311432][ T153] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.324008][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.326505][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.333914][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.338119][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.345395][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.349820][ T4052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.421255][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.424736][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.432451][ T4052] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.446686][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.460375][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.464786][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.467223][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.471145][ T4052] device veth0_vlan entered promiscuous mode [ 54.479682][ T4052] device veth1_vlan entered promiscuous mode [ 54.498039][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.500495][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.504199][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.509101][ T4052] device veth0_macvtap entered promiscuous mode [ 54.513975][ T4052] device veth1_macvtap entered promiscuous mode [ 54.529109][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.531184][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.536456][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.542287][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.546500][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.554916][ T4052] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.557123][ T4052] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.559120][ T4052] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.561278][ T4052] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.824765][ T1614] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.826842][ T1614] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.829664][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.848743][ T153] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.850707][ T153] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.856443][ T1614] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 55.773313][ T136] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.849934][ T136] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 59.768995][ T136] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 59.830170][ T136] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:00 executed programs: 0 [ 60.892356][ T4159] chnl_net:caif_netlink_parms(): no params data found [ 60.939770][ T4159] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.941691][ T4159] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.945806][ T4159] device bridge_slave_0 entered promiscuous mode [ 60.949713][ T4159] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.951463][ T4159] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.955629][ T4159] device bridge_slave_1 entered promiscuous mode [ 60.975137][ T4159] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.979526][ T4159] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.010100][ T4159] team0: Port device team_slave_0 added [ 61.023388][ T4159] team0: Port device team_slave_1 added [ 61.043819][ T4159] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.045534][ T4159] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 61.052138][ T4159] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.059346][ T4159] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.061132][ T4159] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 61.071159][ T4159] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.135354][ T4159] device hsr_slave_0 entered promiscuous mode [ 61.176300][ T4159] device hsr_slave_1 entered promiscuous mode [ 61.212882][ T4159] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.215038][ T4159] Cannot create hsr debugfs directory [ 62.000888][ T4159] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.045374][ T4159] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.065213][ T4159] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.104860][ T4159] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.172163][ T4159] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.181095][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.187655][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.195431][ T4159] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.202601][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.206022][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.208413][ T153] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.210137][ T153] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.218540][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.221022][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.223698][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.226142][ T153] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.228040][ T153] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.230341][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.270498][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.277815][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.281192][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.284811][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.287446][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.290008][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.292508][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.302408][ T4159] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.306726][ T4159] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.310454][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.313018][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.315987][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.396724][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.398739][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.406371][ T4159] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.419278][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.422296][ T544] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.439352][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.441897][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.449841][ T4159] device veth0_vlan entered promiscuous mode [ 62.454843][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.457755][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.464323][ T4159] device veth1_vlan entered promiscuous mode [ 62.481474][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.485096][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.487506][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 62.490513][ T153] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.496110][ T4159] device veth0_macvtap entered promiscuous mode [ 62.500597][ T4159] device veth1_macvtap entered promiscuous mode [ 62.515290][ T4159] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 62.518034][ T4159] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 62.521639][ T4159] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.525854][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.528232][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.530699][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.534335][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.539063][ T4159] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 62.541619][ T4159] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 62.545933][ T4159] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.547820][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.550517][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 62.558814][ T4159] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.561028][ T4159] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.565117][ T4159] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.567334][ T4159] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.654398][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.656441][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.660409][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 62.679310][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.681318][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.684480][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 62.833041][ T3605] Bluetooth: hci0: command 0x0409 tx timeout [ 62.878682][ T4263] [ 62.879327][ T4263] ====================================================== [ 62.881139][ T4263] WARNING: possible circular locking dependency detected [ 62.882893][ T4263] 5.15.175-syzkaller #0 Not tainted [ 62.884242][ T4263] ------------------------------------------------------ [ 62.886055][ T4263] syz.0.16/4263 is trying to acquire lock: [ 62.887674][ T4263] ffff0000d0ac0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xd0/0x1c0 [ 62.890780][ T4263] [ 62.890780][ T4263] but task is already holding lock: [ 62.892763][ T4263] ffff800016f36ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 62.895269][ T4263] [ 62.895269][ T4263] which lock already depends on the new lock. [ 62.895269][ T4263] [ 62.898032][ T4263] [ 62.898032][ T4263] the existing dependency chain (in reverse order) is: [ 62.900454][ T4263] [ 62.900454][ T4263] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 62.902531][ T4263] __mutex_lock_common+0x194/0x2154 [ 62.903966][ T4263] mutex_lock_nested+0xa4/0xf8 [ 62.905412][ T4263] rfkill_register+0x44/0x7a4 [ 62.906813][ T4263] hci_register_dev+0x3e0/0x880 [ 62.908203][ T4263] vhci_create_device+0x2c4/0x568 [ 62.909667][ T4263] vhci_write+0x318/0x3b8 [ 62.910999][ T4263] vfs_write+0x884/0xb44 [ 62.912273][ T4263] ksys_write+0x15c/0x26c [ 62.913550][ T4263] __arm64_sys_write+0x7c/0x90 [ 62.914931][ T4263] invoke_syscall+0x98/0x2b8 [ 62.916245][ T4263] el0_svc_common+0x138/0x258 [ 62.917702][ T4263] do_el0_svc+0x58/0x14c [ 62.918922][ T4263] el0_svc+0x7c/0x1f0 [ 62.920104][ T4263] el0t_64_sync_handler+0x84/0xe4 [ 62.921548][ T4263] el0t_64_sync+0x1a0/0x1a4 [ 62.922806][ T4263] [ 62.922806][ T4263] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 62.924835][ T4263] __mutex_lock_common+0x194/0x2154 [ 62.926406][ T4263] mutex_lock_nested+0xa4/0xf8 [ 62.927754][ T4263] vhci_send_frame+0x8c/0x10c [ 62.929078][ T4263] hci_send_frame+0x194/0x2f0 [ 62.930455][ T4263] hci_tx_work+0x9ac/0x16cc [ 62.931840][ T4263] process_one_work+0x790/0x11b8 [ 62.933233][ T4263] worker_thread+0x910/0x1034 [ 62.934773][ T4263] kthread+0x37c/0x45c [ 62.935965][ T4263] ret_from_fork+0x10/0x20 [ 62.937204][ T4263] [ 62.937204][ T4263] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 62.939581][ T4263] __flush_work+0xf8/0x1c0 [ 62.940931][ T4263] flush_work+0x24/0x38 [ 62.942119][ T4263] hci_dev_do_close+0x16c/0x1060 [ 62.943621][ T4263] hci_unregister_dev+0x248/0x4d4 [ 62.945031][ T4263] vhci_release+0x74/0xc4 [ 62.946366][ T4263] __fput+0x1c4/0x800 [ 62.947508][ T4263] ____fput+0x20/0x30 [ 62.948775][ T4263] task_work_run+0x130/0x1e4 [ 62.950125][ T4263] do_exit+0x670/0x20bc [ 62.951419][ T4263] do_group_exit+0x110/0x268 [ 62.952824][ T4263] get_signal+0x634/0x1550 [ 62.954161][ T4263] do_notify_resume+0x3d0/0x32b8 [ 62.955647][ T4263] el0_svc+0xfc/0x1f0 [ 62.956797][ T4263] el0t_64_sync_handler+0x84/0xe4 [ 62.958293][ T4263] el0t_64_sync+0x1a0/0x1a4 [ 62.959641][ T4263] [ 62.959641][ T4263] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 62.961673][ T4263] __mutex_lock_common+0x194/0x2154 [ 62.963266][ T4263] mutex_lock_nested+0xa4/0xf8 [ 62.964680][ T4263] bg_scan_update+0x9c/0x470 [ 62.965967][ T4263] process_one_work+0x790/0x11b8 [ 62.967483][ T4263] worker_thread+0x910/0x1034 [ 62.969039][ T4263] kthread+0x37c/0x45c [ 62.970256][ T4263] ret_from_fork+0x10/0x20 [ 62.971534][ T4263] [ 62.971534][ T4263] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 62.974245][ T4263] __lock_acquire+0x32d4/0x7638 [ 62.975746][ T4263] lock_acquire+0x240/0x77c [ 62.977035][ T4263] __flush_work+0xf8/0x1c0 [ 62.978274][ T4263] __cancel_work_timer+0x3ec/0x548 [ 62.979750][ T4263] cancel_work_sync+0x24/0x38 [ 62.981076][ T4263] hci_request_cancel_all+0xcc/0x2d0 [ 62.982546][ T4263] hci_dev_do_close+0x54/0x1060 [ 62.983899][ T4263] hci_rfkill_set_block+0xdc/0x1d0 [ 62.985345][ T4263] rfkill_set_block+0x18c/0x37c [ 62.986692][ T4263] rfkill_fop_write+0x594/0x750 [ 62.988067][ T4263] vfs_write+0x280/0xb44 [ 62.989325][ T4263] ksys_write+0x15c/0x26c [ 62.990552][ T4263] __arm64_sys_write+0x7c/0x90 [ 62.991940][ T4263] invoke_syscall+0x98/0x2b8 [ 62.993244][ T4263] el0_svc_common+0x138/0x258 [ 62.994657][ T4263] do_el0_svc+0x58/0x14c [ 62.995869][ T4263] el0_svc+0x7c/0x1f0 [ 62.997082][ T4263] el0t_64_sync_handler+0x84/0xe4 [ 62.998529][ T4263] el0t_64_sync+0x1a0/0x1a4 [ 62.999871][ T4263] [ 62.999871][ T4263] other info that might help us debug this: [ 62.999871][ T4263] [ 63.002575][ T4263] Chain exists of: [ 63.002575][ T4263] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 63.002575][ T4263] [ 63.006552][ T4263] Possible unsafe locking scenario: [ 63.006552][ T4263] [ 63.008511][ T4263] CPU0 CPU1 [ 63.009967][ T4263] ---- ---- [ 63.011379][ T4263] lock(rfkill_global_mutex); [ 63.012699][ T4263] lock(&data->open_mutex); [ 63.014520][ T4263] lock(rfkill_global_mutex); [ 63.016397][ T4263] lock((work_completion)(&hdev->bg_scan_update)); [ 63.018156][ T4263] [ 63.018156][ T4263] *** DEADLOCK *** [ 63.018156][ T4263] [ 63.020244][ T4263] 1 lock held by syz.0.16/4263: [ 63.021523][ T4263] #0: ffff800016f36ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 63.024224][ T4263] [ 63.024224][ T4263] stack backtrace: [ 63.025755][ T4263] CPU: 0 PID: 4263 Comm: syz.0.16 Not tainted 5.15.175-syzkaller #0 [ 63.027890][ T4263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 63.030567][ T4263] Call trace: [ 63.031399][ T4263] dump_backtrace+0x0/0x530 [ 63.032647][ T4263] show_stack+0x2c/0x3c [ 63.033739][ T4263] dump_stack_lvl+0x108/0x170 [ 63.035025][ T4263] dump_stack+0x1c/0x58 [ 63.036080][ T4263] print_circular_bug+0x150/0x1b8 [ 63.037441][ T4263] check_noncircular+0x2cc/0x378 [ 63.038733][ T4263] __lock_acquire+0x32d4/0x7638 [ 63.040017][ T4263] lock_acquire+0x240/0x77c [ 63.041160][ T4263] __flush_work+0xf8/0x1c0 [ 63.042290][ T4263] __cancel_work_timer+0x3ec/0x548 [ 63.043634][ T4263] cancel_work_sync+0x24/0x38 [ 63.044936][ T4263] hci_request_cancel_all+0xcc/0x2d0 [ 63.046352][ T4263] hci_dev_do_close+0x54/0x1060 [ 63.047610][ T4263] hci_rfkill_set_block+0xdc/0x1d0 [ 63.049029][ T4263] rfkill_set_block+0x18c/0x37c [ 63.050339][ T4263] rfkill_fop_write+0x594/0x750 [ 63.051619][ T4263] vfs_write+0x280/0xb44 [ 63.052735][ T4263] ksys_write+0x15c/0x26c [ 63.053858][ T4263] __arm64_sys_write+0x7c/0x90 [ 63.055149][ T4263] invoke_syscall+0x98/0x2b8 [ 63.056318][ T4263] el0_svc_common+0x138/0x258 [ 63.057502][ T4263] do_el0_svc+0x58/0x14c [ 63.058673][ T4263] el0_svc+0x7c/0x1f0 [ 63.059641][ T4263] el0t_64_sync_handler+0x84/0xe4 [ 63.061044][ T4263] el0t_64_sync+0x1a0/0x1a4